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OE Tuning recently tuned three N52 based E90 3 series. The first car was a 2006 E90 325i on 91 octane that was completely stock. The second car was an E90 328i also on 91 octane and completely stock. The E90 330i had an aftermarket filter and BMW performance exhaust, also on 91 pump gas. These cars all share the same basic motor but with different intake plenum designs and tunes. They were all flashed with an off the shelf tune available from OE Tuning for $395. The results are quite interesting, check out the graphs below.

Mmm, can someone please post a comparisin chart which shows different outcome with one reference engine / car so the difference between various dyno methods / systems becomes clear?
Sorry for the OT

Well, no, not really.

Unfortunately there are different dynos and even then different conditions and different fuels. No way to make everything perfect but one thing that the dyno dynamics has is shootout mode which essentially makes them all read the same.

Unfortunately there are different dynos and even then different conditions and different fuels. No way to make everything perfect but one thing that the dyno dynamics has is shootout mode which essentially makes them all read the same.

I think the numbers on the standard 330i are horrible. Probably due to your 91 octane pumpgas.
They should do about 255bhp with that engine stock...

Just as Sticky said, the rated power for any car is at the crankshaft. Meaning the engine separate from the chassis, not connected to anything. Dyno dynamics dynomometers read very low. It's important not to get caught up in max numbers, but in the relative gain made after tuning.

I would love to get my car dyno'd on a DJ soon to see what it makes compared to my run on a 179 afer-tune whp on a DD. it should *should* make 210 whp or slightly more if im lucky. I'm also not sure what effect my 3.38 diff (as opposed to the 2.93 I had during the first run) would have. Soon I will do this.

I would love to get my car dyno'd on a DJ soon to see what it makes compared to my run on a 179 afer-tune whp on a DD. it should *should* make 210 whp or slightly more if im lucky. I'm also not sure what effect my 3.38 diff (as opposed to the 2.93 I had during the first run) would have. Soon I will do this.

I have dynojet and DD numbers from the OE dyno. Don't expect huge gains going to a Dynojet but their DD does read lower.